CN109223117B - Medical spinal cord cutting device - Google Patents
Medical spinal cord cutting device Download PDFInfo
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- CN109223117B CN109223117B CN201810700170.9A CN201810700170A CN109223117B CN 109223117 B CN109223117 B CN 109223117B CN 201810700170 A CN201810700170 A CN 201810700170A CN 109223117 B CN109223117 B CN 109223117B
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
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Abstract
The invention provides a medical spinal cord cutting device, and relates to a medical spinal cord treatment device. The medical spinal cord cutting device includes: the scalpel is provided with a C-shaped scalpel arm, the cutting edge of the scalpel is formed at the concave part of the scalpel arm and arranged along the arc of the scalpel arm, and the side wall of the spinal cord is arranged in the concave part of the scalpel arm; and a holding mechanism including a first mechanism formed with a first recess; the second mechanism is formed with a second concave part and can be selectively buckled with or separated from the first mechanism, so that the first concave part and the second concave part are buckled to form a hole-shaped part, and the spinal cord and the knife arm are kept in the hole-shaped part; and a guide part formed at the first mechanism or/and the second mechanism, wherein the scalpel is placed in the guide part, and the guide part is used for guiding the knife arm to be separated from the transverse direction of the spinal cord and the hole part so as to cut off the spinal cord. The transverse end surface of the spinal cord is very neat, so that the spinal cord fusion effect and the spinal cord injury recovery are very favorably guaranteed.
Description
Technical Field
The invention relates to a medical spinal cord treatment device, in particular to a medical spinal cord cutting device.
Background
In patients with spinal cord injury, the spinal cords of most patients have multi-segment degenerative necrosis, which directly causes that the signal transmission sent by cerebral cortex can not cross the injured area, therefore, the diseased and necrotic spinal cords need to be removed when the spinal cord injury is to be cured.
Sharp transection of the spinal cord before spinal cord reconnection fusion has a significant impact on motor and sensory function recovery after spinal cord fusion. When the spinal cord is sharply transected, the spinal cord is less damaged, has less axonal degeneration, and has better postoperative function recovery.
However, after the spinal cord is sharply transected by using a common scalpel, the end surface of the transected spinal cord is irregular, so that the subsequent spinal cord end fusion effect is reduced, and the spinal cord injury recovery is influenced.
Disclosure of Invention
An object of the present invention is to provide a medical spinal cord cutting device, so as to solve the aforementioned problem that the end surface of the spinal cord after the spinal cord is transected is not neat after the spinal cord is sharply transected by using a common scalpel.
Another object of the present invention is to provide a medical spinal cord cutting device that is convenient to use in narrow vertebrae of the human body.
In particular, the present invention provides a medical spinal cord cutting device comprising:
the scalpel is provided with a C-shaped knife arm, the cutting edge of the scalpel is formed at the concave part of the knife arm and is arranged along the arc of the knife arm, and the side wall of the spinal cord is arranged in the concave part of the knife arm; and
the holding mechanism comprises
A first mechanism formed with a first recess;
the second mechanism is selectively buckled with or separated from the first mechanism, so that the first concave part and the second concave part are buckled to form a hole part, and the spinal cord and the knife arm are kept in the hole part; and
a guide part formed at the first mechanism or/and the second mechanism, wherein the scalpel is placed in the guide part, and the guide part is used for guiding the knife arm to be separated from the hole part from the transverse direction of the spinal cord so as to cut off the spinal cord.
Further, the first mechanism is plate-shaped and extends along the length direction of the first mechanism, the cross section of the first mechanism is J-shaped, and the first concave part is a bent part of the first mechanism;
the second mechanism is formed into a strip plate shape, the cross section of the second mechanism is U-shaped, and the second concave part is a bent part of the second mechanism;
the straight plate part of the first mechanism is provided with a positioning part, the positioning part is butted with the second mechanism, and the positioning part is used for accurately forming the first concave part and the second concave part into the hole-shaped part.
Further, the guiding parts are multiple and are sequentially arranged on the first mechanism or/and the second mechanism along the length direction of the spinal cord, and the scalpel is selectively placed in any one of the multiple guiding parts.
Further, the scalpel is provided in plurality, and each scalpel is placed in one of the guide portions.
Further, the guide part includes:
a first groove provided on the plate surface on which the first recessed portion is located, the first groove extending across the first recessed portion in the width direction of the first mechanism; and
the guide groove is formed in the second mechanism, the two opposite side plate surfaces of the second mechanism are communicated, and the cutter arm can penetrate through the guide groove;
the scalpel is provided with a scalpel bar, one end of the scalpel bar is connected with the scalpel arm, the scalpel bar and the scalpel arm are accommodated in the first groove, the other end of the scalpel bar is formed into a first holding part, and the cutting edge of the scalpel penetrates through the guide groove along the transverse direction of the spinal cord by operating the first holding part so as to completely cut off the spinal cord.
Furthermore, the first grooves are multiple and are sequentially arranged at the first concave part at intervals along the length direction of the first mechanism;
the guide grooves are multiple and are sequentially arranged at the second concave part at intervals along the length direction of the second mechanism;
each first groove is opposite to one guide groove;
the length direction of the first mechanism and the second mechanism is consistent with the length direction of the spinal cord.
Further, one end of the first groove is communicated with the end portion of the straight plate portion of the first mechanism, the other end of the cutter bar extends out of the first mechanism from one end of the first groove and forms the first holding portion, and the other end of the cutter bar is arranged opposite to one end of the cutter bar.
Further, under the condition that the cutting edge of the scalpel is accommodated in the first groove, the arc-shaped cutting edge at the top of the cutting edge of the scalpel is completely accommodated in the first groove, so that the cutting edge of the scalpel is prevented from scratching the spinal cord.
Further, the positioning part is formed as a second groove and extends along the width direction of the first mechanism;
the second mechanism is provided with a connecting piece and a second holding part, the second mechanism, the connecting piece and the second holding part are sequentially connected, and the connecting piece is arranged in the positioning part, so that the first concave part and the second concave part are accurately formed into the hole-shaped part.
Furthermore, one end of the positioning part is communicated with the end part of the straight plate part of the first mechanism, the connecting piece is formed into a rod-shaped part, one end of the connecting piece is connected with the second mechanism, and the other end of the connecting piece extends out of one end of the positioning part and is connected with the second holding part.
Further, the scalpel is a single-edge scalpel.
In the invention, the blade is used to form a C-shaped concave arc, and the side wall of the spinal cord is arranged in the concave, so that the side wall of the spinal cord is contacted with the knife edge as much as possible, and the spinal cord is fixed by the retaining mechanism, then the scalpel is moved transversely along the spinal cord under the guidance of the guide part, so that the knife edge cuts off the spinal cord, namely the spinal cord is transected, because the contact area of the blade and the side wall of the spinal cord is very large, the formed cutting line is very long, and in the process of separating the scalpel and the holding mechanism, the blade and the side wall of the spinal cord are simultaneously used for cutting the spinal cord at a plurality of contact positions, and the guide parts move under the uniform guidance of the guide parts, and compared with the situation that a surgeon cuts the spinal cord by using a common scalpel through own experience, the guide parts can guide the moving direction of the scalpel, more precisely the cutting direction of the scalpel more accurately, and move completely along the transverse direction of the spinal cord. Therefore, the transverse end surface of the spinal cord is very neat, and very favorable guarantee is provided for the subsequent spinal cord end fusion effect and spinal cord injury recovery.
In addition, before the spinal cord is transected, the process of fixing the spinal cord is more convenient and easy to operate by buckling the first sunken part and the second sunken part of the first mechanism and the second mechanism. Thereby further ensuring the tidiness of the rear end part of the transverse spinal cord.
Further, in use, the scalpel may be placed in the first recess and together with the first mechanism on a lateral side of the spinal cord, such that the spinal cord is placed in the recess of the blade arm; then the second mechanism is buckled with the first mechanism, the guide groove and the knife arm are oppositely arranged at the moment, the first holding part is lifted, the spinal cord is still positioned in the hole part under the blocking of the second concave part, the knife arm cuts the spinal cord, and then the spinal cord is separated from the guide groove, so that the transverse cutting of the spinal cord is realized.
And, under the normal condition, the straight plate portion of first mechanism is vertical to be set up, and its tip is the top of first mechanism, and like this, the first portion of holding that holds sets up at the top of first mechanism to conveniently carry the operation of drawing to the first portion of holding, thereby further improve this medical spinal cord cutting device's convenience of use.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the scalpel according to one embodiment of the present invention;
FIG. 2 is a schematic perspective view of the second mechanism;
FIG. 3 is a schematic perspective view of the first mechanism;
FIG. 4 is a schematic perspective view of the scalpel disposed in the first mechanism, showing the first mechanism defining only a first recess;
FIG. 5 is a schematic partial cross-sectional view A-A of FIG. 4;
fig. 6 is a schematic perspective view of the medical spinal cord cutting apparatus in an operating state; wherein the first mechanism is shown to be provided with only one first groove and the second mechanism is shown to be provided with one guide groove;
fig. 7 is another schematic perspective view of the medical spinal cord cutting apparatus in an operating state; wherein the first mechanism is shown to be provided with a plurality of first grooves and the second mechanism is shown to be provided with a plurality of guide slots;
FIG. 8 is another schematic perspective view of the scalpel disposed in the first mechanism; wherein the first mechanism is shown having a plurality of first grooves formed therein.
Detailed Description
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.
FIG. 1 is a schematic view of the scalpel according to one embodiment of the present invention; FIG. 2 is a schematic perspective view of the second mechanism; FIG. 3 is a schematic perspective view of the first mechanism; FIG. 4 is a schematic perspective view of the scalpel disposed in the first mechanism, showing the first mechanism defining only a first recess; FIG. 5 is a schematic partial cross-sectional view A-A of FIG. 4; fig. 6 is a schematic perspective view of the medical spinal cord cutting apparatus in an operating state; wherein the first mechanism is shown to be provided with only one first groove and the second mechanism is shown to be provided with one guide groove; fig. 7 is another schematic perspective view of the medical spinal cord cutting apparatus in an operating state; wherein the first mechanism is shown to be provided with a plurality of first grooves and the second mechanism is shown to be provided with a plurality of guide slots; FIG. 8 is another schematic perspective view of the scalpel disposed in the first mechanism; wherein the first mechanism is shown having a plurality of first grooves formed therein.
Referring to fig. 1 to 6, the present embodiment provides a medical spinal cord cutting apparatus including: a scalpel 100 and a retention mechanism 300. The scalpel 100 is provided with a C-shaped knife arm 101, the cutting edge 102 of the scalpel 100 is formed at the concave position of the knife arm 101 and is arranged along the arc of the knife arm 101, and the side wall of the spinal cord 200 is arranged in the concave position of the knife arm 101; the holding mechanism 300 includes a first mechanism 301, a second mechanism 302, and a guide portion. The first mechanism 301 is formed with a first recess 3011; the second mechanism 302 is formed with a second recess 3021, and the second mechanism 302 can be selectively engaged with or disengaged from the first mechanism 301, so that the first recess 3011 and the second recess 3021 are engaged to form a hole, and the spinal cord 200 and the arm 101 are retained in the hole. A guide portion is formed at the first mechanism 301 or/and the second mechanism 302, to which the scalpel 100 is mounted, for guiding the knife arm 101 to be detached from the hole portion in the lateral direction of the spinal cord 200 to cut the spinal cord 200.
When cutting the spinal cord 200, first, the first recess 3011 of the first mechanism 301 is placed on one lateral side of the spinal cord 200, for example, the bottom of the spinal cord 200 when the patient lies or lies on the stomach, and at this time, the scalpel 100 can be placed on one lateral side of the spinal cord 200 along with the first recess 3011, so that the side wall of the spinal cord 200 is placed in the recess of the knife arm 101; of course, the scalpel 100 may not be disposed on one side of the lateral direction of the spinal cord 200 along with the first recess 3011, but the scalpel 100 may be disposed after the first mechanism 301 is engaged with the spinal cord 200, so that the side wall of the spinal cord 200 is disposed in the recess of the arm 101, depending on the specific requirement of the operation, and the habituation of the surgeon, and then the second mechanism 302 is engaged with the first mechanism 301, so that the spinal cord 200 is disposed in the first recess 3011 and the second recess 3021, i.e., the hole, and the scalpel 100 is disposed in the guide portion, and then the scalpel 100 is operated to detach the scalpel 100 from the hole and the lateral direction of the spinal cord 200 under the guidance of the guide portion, so that the blade 102 cuts the spinal cord 200.
In this embodiment, the blade 102 is used to form a circular arc of a C-shaped recess, and the side wall of the spinal cord 200 is placed in the recess, so that the side wall of the spinal cord 200 contacts with the blade 102 as much as possible, and the spinal cord 200 is fixed by the holding mechanism 300, and then the scalpel 100 is guided by the guide to move along the spinal cord 200 laterally, so that the blade 102 cuts the spinal cord 200, that is, the spinal cord 200 is traversed, because the contact area of the blade 102 and the side wall of the spinal cord 200 is very large, the formed cutting line is very long, and in the process of separating the scalpel 100 from the holding mechanism 300, the blade 102 and the side wall of the spinal cord 200 are in contact at the same time at a plurality of contact positions, and all are guided by the guide uniformly, so as to cut the spinal cord 200 by the surgeon through the use of the common scalpel 100 by his own experience, the guide moves in the direction of the scalpel 100, more precisely, the cutting direction of the scalpel 100 is guided more precisely — completely along the lateral direction of the spinal cord 200. Therefore, the transverse end surface of the spinal cord 200 is very neat, thereby providing a very beneficial guarantee for the subsequent fusion effect of the spinal cord 200 end and the recovery of the spinal cord 200 injury.
In addition, before the spinal cord 200 is transected, the first recess 3011 and the second recess 3021 of the first mechanism 301 and the second mechanism 302 are buckled to realize more convenient and easy operation of the process of fixing the spinal cord 200. Thereby further ensuring the regularity of the transverse posterior end of the spinal cord 200.
Referring to fig. 2 and 3, further, the first mechanism 301 is plate-shaped and extends along the length direction thereof, the cross section of the first mechanism 301 is J-shaped, and the first recess 3011 is a bent portion of the first mechanism 301; the second mechanism 302 is formed in a long strip plate shape, the cross section of which is U-shaped, and the second concave portion 3021 is a bent portion of the second mechanism 302. The positioning part 500 is formed on the straight plate portion 3012 of the first mechanism 301, the positioning part 500 is abutted against the second mechanism 302, and the positioning part 500 is used for accurately forming the first recessed portion 3011 and the second recessed portion 3021 into hole-shaped portions.
It should be noted that the cross-sections in this embodiment are all planes perpendicular to the length direction of the components, such as the spinal cord, the first mechanism, and the second mechanism.
The plate-shaped part has the great advantages of high structural strength, small volume and easy processing and manufacturing, thereby being fully beneficial to the production and the use of the medical spinal cord 200 cutting device; especially, the spinal cord 200 can be still smoothly fixed in the narrow space of the human vertebra.
Referring to fig. 2 to 8, further, the plurality of guiding parts are arranged in sequence along the length direction of the spinal cord in the first mechanism 301 or/and the second mechanism 302, and the scalpel 100 is selectively placed in any one of the plurality of guiding parts.
In the trial process of the medical spinal cord cutting device, due to the fact that the space of the spine of a human body is very narrow, the moving range of the first mechanism and the second mechanism at the spinal cord is very limited, particularly the first mechanism and the second mechanism are very difficult to move along the length direction of the spinal cord, and if only one guide part is arranged in the spinal cord cutting device, the position of the spinal cord cutting device is not completely coincided with the position of the guide part; this seriously affects the selection of the location of the spinal cord dissection and the spinal cord dissection effect. Therefore, a plurality of guide parts are arranged on the first mechanism or/and the second mechanism and are sequentially arranged along the length direction of the spinal cord; therefore, the cutting position of the spinal cord can be selectively and completely coincided with an optimal guide part as far as possible, and then the scalpel is placed in the guide part, so that the selection of the cutting position of the spinal cord is more reasonable and accurate, and the cutting effect of the spinal cord is improved.
Referring to fig. 2 to 8, further, there are a plurality of scalpels 100, and each of the scalpels 100 is disposed in one of the guide portions.
With such arrangement, two scalpels 100 can be installed in the plurality of guide parts at the same time, and then the two scalpels 100 respectively correspond to two ends of the spinal cord to be cut off, so that the two ends of the spinal cord can be interrupted only by sequentially lifting the scalpels 100, and the operation efficiency is improved.
Referring to fig. 4 and 6, the guide portion further includes: a first groove 401 and a guide groove 402. The first groove 401 is formed in the plate surface where the first recessed portion 3011 is located, and the first groove 401 extends through the first recessed portion 3011 along the width direction of the first mechanism 301; the guide groove 402 is opened in the second mechanism 302 and communicates two opposite side plate surfaces of the second mechanism 302, and the knife arm 101 can pass through the guide groove 402. Wherein, the scalpel 100 is formed with a knife bar 103, one end of the knife bar 103 is connected with the knife arm 101, the knife bar 103 and the knife arm 101 are accommodated in the first groove 401, the other end of the knife bar 103 is formed as a first holding part 104, and the knife edge 102 of the scalpel 100 passes through the guide groove 402 along the transverse direction of the spinal cord 200 by operating the first holding part 104, so as to completely cut off the spinal cord 200.
In use, the scalpel 100 can be placed in the first groove 401 and on one lateral side of the spinal cord 200 together with the first mechanism 301, so that the spinal cord 200 is placed in the recess of the knife arm 101; then the second mechanism 302 is buckled with the first mechanism 301, and the guide groove 402 is arranged opposite to the knife arm 101, so that the first holding part 104 is lifted, the spinal cord 200 is still in the hole part under the blocking of the second concave part 3021, and the knife arm 101 cuts the spinal cord 200 and then is separated from the guide groove 402, thereby realizing the transverse cutting of the spinal cord 200.
Referring to fig. 2 to 8, the first grooves 401 are multiple and are sequentially arranged at intervals along the length direction of the first mechanism 301 at the first recess 3011; the guide grooves 402 are plural and arranged at the second recess 3021 in sequence at intervals along the length direction of the second mechanism 302; each first groove 401 is disposed opposite to one guide groove 402; the longitudinal direction of the first mechanism 301 and the second mechanism 302 coincides with the longitudinal direction of the spinal cord.
This arrangement is a specific arrangement of the plurality of guide portions, and the effects thereof are as described above, and will not be described here.
Referring to fig. 2 to 6, further, one end of the first groove 401 communicates with the end of the straight plate portion 3012 of the first mechanism 301, and the other end of the bar 103 protrudes from the one end of the first groove 401 out of the first mechanism 301 and is formed as the first grip portion 104, and the other end of the bar 103 is disposed opposite to the one end thereof.
Normally, the straight plate portion 3012 of the first mechanism 301 is vertically disposed, and the end portion thereof is the top portion of the first mechanism 301, so that the first holding portion 104 is disposed on the top portion of the first mechanism 301, thereby facilitating the lifting operation of the first holding portion 104, and further improving the convenience of use of the medical spinal cord 200 cutting device.
Referring to fig. 4 and 5, further, in the state that the blade 102 of the scalpel 100 is accommodated in the first groove 401, the top arc-shaped blade edge 1021 of the blade 102 of the scalpel 100 is completely accommodated in the first groove 401, so as to prevent the blade 102 of the scalpel 100 from scratching the spinal cord 200.
Since the spinal cord 200 is very important for the human body, and the damage of the medical device to the spinal cord 200 in the operation process can seriously affect the normal function of the spinal cord 200, the arc-shaped edge at the top of the knife edge 102 of the scalpel 100 is completely accommodated in the first groove 401, so that the knife edge 102 is effectively prevented from being exposed from the first groove 401 and scratching the side wall of the spinal cord 200 in the process of moving the first mechanism 301 to one side of the spinal cord 200 in the transverse direction; thereby improving the safety of the medical spinal cord 200 cutting device.
Referring to fig. 4 and 6, further, the positioning portion 500 is formed as a second groove and extends along the width direction of the first mechanism 301; the second mechanism 302 is formed with a link 3023 and a second grip 3022, and the second mechanism 302, the link 3023 and the second grip 3022 are connected in this order, and the positioning portion 500 is placed with the link 3023, so that the first recess 3011 and the second recess 3021 are accurately formed as hole-shaped portions.
The connecting piece 3023 is matched with the positioning part 500 on one hand, and the side wall of the second concave part 3021 is attached to the straight plate part 3012 of the first mechanism 301, so that the first concave part 3011 and the second concave part 3021 are accurately positioned; the connecting member 3023 is connected to the second grip portion 3022 on the other hand, so that the second grip portion 3022 can perform these operations very conveniently and quickly, and at the same time, during the crossing of the spinal cord 200 using the blade 102, the movement of the spinal cord 200 relative to the second recess 3021 is prevented by holding the second grip portion 3022 by hand, thereby ensuring the tidiness of the crossing of the rear end of the spinal cord 200.
Referring to fig. 6, further, one end of the positioning portion 500 communicates with an end portion of the straight plate portion 3012 of the first mechanism 301, the link 3023 is formed as a rod-shaped portion, one end of the link 3023 is connected to the second mechanism 302, and the other end of the link 3023 protrudes out of one end of the second groove and is connected to the second holding portion 3022.
With this arrangement, the second grip portion 3022 is placed on top of the straight plate portion 3012 of the first mechanism 301, thereby further improving the ease of operation of the second grip portion 3022.
Referring to fig. 1, further, the scalpel 100 is a single-edged scalpel 100.
Finally, for spinal fusion, refer to the published chinese patent CN201710979273.9, a spinal fusion agent and its preparation method and use.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. A medical spinal cord cutting device, comprising:
the scalpel is provided with a C-shaped knife arm, the cutting edge of the scalpel is formed at the concave part of the knife arm and is arranged along the arc of the knife arm, and the side wall of the spinal cord is arranged in the concave part of the knife arm; and
the holding mechanism comprises
A first mechanism formed with a first recess;
the second mechanism is selectively buckled with or separated from the first mechanism, so that the first concave part and the second concave part are buckled to form a hole part, and the spinal cord and the knife arm are kept in the hole part; and
a guide part formed at the first mechanism or/and the second mechanism, the scalpel being placed in the guide part, the guide part being used to guide the knife arm to disengage from the hole part from the lateral direction of the spinal cord so as to cut off the spinal cord;
the first mechanism is plate-shaped and extends along the length direction of the first mechanism, the cross section of the first mechanism is J-shaped, and the first concave part is a bent part of the first mechanism;
the second mechanism is formed into a strip plate shape, the cross section of the second mechanism is U-shaped, and the second concave part is a bent part of the second mechanism;
the straight plate part of the first mechanism is provided with a positioning part, the positioning part is butted with the second mechanism, and the positioning part is used for accurately forming the first concave part and the second concave part into the hole-shaped part.
2. The medical spinal cord cutting apparatus according to claim 1, wherein said guide portion is plural and is arranged in said first mechanism or/and said second mechanism in sequence along a length direction of said spinal cord, said scalpel being selectively placed in any one of plural said guide portions.
3. The medical spinal cord cutting apparatus according to claim 2, wherein said plurality of scalpels are provided, each said scalpels being disposed in one of said guides.
4. The medical spinal cord cutting apparatus according to claim 2 or 3, wherein said guide portion includes:
a first groove provided on the plate surface on which the first recessed portion is located, the first groove extending across the first recessed portion in the width direction of the first mechanism; and
the guide groove is formed in the second mechanism, the two opposite side plate surfaces of the second mechanism are communicated, and the cutter arm can penetrate through the guide groove;
the scalpel is provided with a scalpel bar, one end of the scalpel bar is connected with the scalpel arm, the scalpel bar and the scalpel arm are accommodated in the first groove, the other end of the scalpel bar is formed into a first holding part, and the cutting edge of the scalpel penetrates through the guide groove along the transverse direction of the spinal cord by operating the first holding part so as to completely cut off the spinal cord.
5. The medical spinal cord cutting apparatus according to claim 4,
the first grooves are arranged at the first concave part at intervals in sequence along the length direction of the first mechanism;
the guide grooves are multiple and are sequentially arranged at the second concave part at intervals along the length direction of the second mechanism;
each first groove is opposite to one guide groove;
the length direction of the first mechanism and the second mechanism is consistent with the length direction of the spinal cord.
6. The medical spinal cord cutting apparatus according to claim 4,
one end of the first groove is communicated with the end part of the straight plate part of the first mechanism, the other end of the cutter bar extends out of the first mechanism from one end of the first groove and forms the first holding part, and the other end of the cutter bar is arranged opposite to one end of the cutter bar.
7. The medical spinal cord cutting apparatus according to claim 4, wherein in a state where the cutting edge of said scalpel is received in said first groove, the top arc-shaped cutting edge of the cutting edge of said scalpel is completely received in said first groove to prevent the cutting edge of said scalpel from scratching said spinal cord.
8. The medical spinal cord cutting apparatus according to claim 1, wherein said positioning portion is formed as a second groove and extends in a width direction of said first mechanism;
the second mechanism is provided with a connecting piece and a second holding part, the second mechanism, the connecting piece and the second holding part are sequentially connected, and the connecting piece is arranged in the positioning part, so that the first concave part and the second concave part are accurately formed into the hole-shaped part.
9. The medical spinal cord cutting apparatus according to claim 8,
one end of the positioning part is communicated with the end part of the straight plate part of the first mechanism, the connecting piece is formed into a rod-shaped part, one end of the connecting piece is connected with the second mechanism, and the other end of the connecting piece extends out of one end of the positioning part and is connected with the second holding part.
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| CN201810700170.9A CN109223117B (en) | 2018-06-29 | 2018-06-29 | Medical spinal cord cutting device |
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| CN201810700170.9A CN109223117B (en) | 2018-06-29 | 2018-06-29 | Medical spinal cord cutting device |
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| CN109223117B true CN109223117B (en) | 2020-12-29 |
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| US5423842A (en) * | 1988-05-16 | 1995-06-13 | Michelson; Gary K. | Spinal microknife |
| CN101001581A (en) * | 2004-08-11 | 2007-07-18 | 爱尔伯电子医疗设备公司 | Electrosurgical instrument |
| CN103263307A (en) * | 2013-06-08 | 2013-08-28 | 吴爱悯 | Cutter for spinal cord injury animal model |
| CN104323831A (en) * | 2014-09-16 | 2015-02-04 | 中国人民解放军第一七五医院 | Total spondylectomy intercalated disc cutter |
| CN207220857U (en) * | 2017-03-08 | 2018-04-13 | 无锡市人民医院 | Medical hook knife |
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